PTFE Extruded/Molded Rod/Filled Rod

Ⅰ、Features

Diameter 4-9mm rod selection of dispersed polymerization of PTFE resin paste made by extrusion processing; Diameter 10-150mm rods made of PTFE resin suspension made by plunger processing; diameter of 150mm or more by the mold Made of processing. For filled PTFE rods,can be filled glassfiber,graphite,carbon with different percent,10%,15%,25% and so on. 

Ⅱ、Types and Specifications

Ⅲ、Main Properties

Note: When the diameter of rod is larger than 16mm,only test apparent density.

Ⅳ、Applications

Electrical insulation parts, seal pads, anti-sticking materials

PTFE Paste Extrusion Rods Professional Introduction

I. Product Overview

PTFE Paste Extrusion Rods (Polytetrafluoroethylene Paste Extrusion Rods) are manufactured from dispersion-polymerized PTFE resin using a paste extrusion process, resulting in a high-performance engineering plastic rod with exceptional comprehensive properties. The dense shielding effect of fluorine atoms in its molecular structure grants the material extreme stability in harsh environments, making it widely used in the manufacturing of critical components in the chemical, mechanical, electronics, and medical fields.

II. Core Characteristics

1. Ultra-Broad Temperature Range Stability:

   Can be used long-term within an extreme temperature range of -200°C to +260°C. It does not soften at high temperatures nor become brittle at low temperatures, suitable for demanding applications like cryogenic equipment and high-temperature reactors.

2. Pinnacle of Chemical Resistance:

   Resistant to almost all strong acids (e.g., aqua regia), strong alkalis (e.g., sodium hydroxide), and organic solvents (e.g., acetone). Only a few fluorinating agents (e.g., molten alkali metals) can affect it, making it the preferred material for chemical anti-corrosion.

3. Self-Lubricating & Low Friction:

   Extremely low dynamic friction coefficient (as low as 0.04), reducing wear on mechanical components without additional lubrication, significantly lowering energy consumption, and extending equipment life. Commonly used in moving parts like bearings and piston rings.

4. Excellent Insulation Properties:

   Volume resistivity > 10¹⁶ Ω·cm, dielectric strength > 20 kV/mm. Its insulation characteristics are unaffected by frequency (10 Hz - 10 GHz) and temperature, making it suitable for high-frequency electronic components and high-voltage insulation parts.

5. Flame Retardant & Eco-Friendly:

   Complies with ASTM D635 and D470 flame retardant standards. Limiting Oxygen Index (LOI) > 95% - it does not burn or drip when exposed to an open flame. The material is non-toxic and non-leachable, meeting medical-grade application requirements.

III. Physical Property Parameters Table

Item	Indicator	Test Standard
Apparent Density	2.10-2.30 g/cm³	GB/T 1033.1-2008
Tensile Strength	≥ 30 MPa	GB/T 1040.2-2006
Elongation at Break	≥ 300%	GB/T 1040.2-2006
Coefficient of Thermal Expansion	110-120 μm/m·K	GB/T 1036-2008
Hardness (Shore D)	55-65	GB/T 2411-2008
Water Absorption	≤ 0.01%	GB/T 1034-2008
Dielectric Constant (1 MHz)	2.0-2.1	GB/T 1409-2006

IV. Product Specifications Table

Item	Standard Specifications	Customization Range
Diameter	φ4mm, φ5mm, φ6mm, φ7mm, φ8mm, φ9mm	φ2mm - φ50mm (Tolerance ±0.1mm)
Length	1000mm	200mm - 2000mm (Tolerance ±5mm)
Color	White (Natural)	Other colors  customizable (subject to agreement)
Surface Roughness	Ra ≤ 1.6 μm	Mirror polishing available (Ra ≤ 0.2 μm)

V. Application Scenarios Details

Industry Sector	Typical Application Cases	Core Advantages
Chemical & Pharmaceutical	Reactor linings, corrosion-resistant pipes, valve seals, distillation column packing	Withstands highly corrosive media, prevents equipment leakage and contamination, reduces maintenance frequency (service life can be over 3x that of ordinary materials)
Machinery Manufacturing	Self-lubricating bearings, oil-free compressor piston rings, high-precision guideway pads	Reduces friction loss (lowers energy consumption by 15%-20%), eliminates lubrication maintenance, suitable for food-grade clean environments
Electronics & Electrical	High-frequency cable insulation, semiconductor equipment seals, lithium battery separator coating	Stable dielectric properties, resistant to thermal shock, ensures long-term reliability of electronic components
Medical Devices	Artificial blood vessels, heart valve components, sterilization equipment seals	Non-toxic, anti-bioadhesion, withstands gamma-ray sterilization, complies with ISO 10993 biocompatibility standard
Aerospace & Aviation	Engine fuel line seals, low-temperature sensor protective sleeves	Ultra-broad temperature range stability, lightweight design (density only 1/4 of metal), meets stringent requirements in extreme environments

VI. Material Comparison Data Table

Performance Indicator	PTFE Paste Extrusion Rod	Nylon 66	304 Stainless Steel	PEEK
Continuous Use Temperature	-200°C to +260°C	-40°C to +120°C	-196°C to +800°C	100°C to +260°C
Corrosion Resistance	Resists 99% of chemical media	Not resistant to strong acids/alkalis	Susceptible to Cl⁻ corrosion	Close to PTFE
Friction Coefficient (Dynamic)	0.04-0.10	0.15-0.30	0.18-0.35	0.10-0.15
Tensile Strength	30-35 MPa	60-80 MPa	515-620 MPa	90-100 MPa
Water Absorption	≤ 0.01%	1.5%-2.5%	Non-absorbent	≤ 0.5%
Density (g/cm³)	2.10-2.30	1.13-1.15	7.93	1.30-1.32
Cost Comparison	High (Preferred for high-performance scenarios)	Low (Mid-to-low end applications)	Medium (General corrosion-resistant material)	Very High (High-end alternative)

VII. Technical Selection Recommendations

· Extreme Corrosion Environments: Prioritize PTFE Paste Extrusion Rods. Their corrosion resistance far exceeds that of stainless steel and nylon, and they require no additional protective coating.

· High-Temperature Dynamic Seals: If temperature > 260°C, consider using it with a 304 stainless steel reinforcement. For lightweight requirements, PEEK can be an alternative (cost increases 3-5 times).

· Precision Moving Parts: The low friction characteristics of PTFE can reduce equipment vibration and noise, making it particularly suitable for oil-free lubrication needs in the food and pharmaceutical industries.

Based on the multi-dimensional data and scenario analysis above, PTFE Paste Extrusion Rods, with their irreplaceable comprehensive performance, represent a core material choice for high-end industrial sectors.